''Pteroceltis'' is a genus of small trees in the family

Cannabaceae Cannabaceae is a small family of flowering plants, known as the hemp family. As now circumscribed, the family includes about 170 species grouped in about 11 genera, including '' Cannabis'' (hemp), '' Humulus'' (hops) and '' Celtis'' (hackberri ...

and containing the living species ''

Pteroceltis tatarinowii ''Pteroceltis tatarinowii'' a species of tree endemic to China and the only extant member of the genus ''Pteroceltis ''Pteroceltis'' is a genus of small trees in the family Cannabaceae and containing the living species ''Pteroceltis tatarinowi ...

''. The genus is now restricted to an endemic range in China and Mongolia. The genus has a fossil record which includes species described from Korea, Japan, Germany, and the United States. The fossil record includes one described species from North America, ''

Pteroceltis knowltoni ''Pteroceltis'' is a genus of small trees in the family Cannabaceae and containing the living species '' Pteroceltis tatarinowii''. The genus is now restricted to an endemic range in China and Mongolia. The genus has a fossil record which includ ...

'' from the

Middle Eocene The Eocene ( ) is a geological epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''Ēṓs'', ' Dawn') a ...

Cockfield Formation The Cockfield Formation is a geologic formation in Mississippi. It preserves fossils dating back to the Paleogene period Period may refer to: Common uses * Period (punctuation) * Era, a length or span of time *Menstruation, commonly referred ...

in Tennessee, while an undescribed species is known from the

Klondike Mountain Formation The Klondike Mountain Formation is an Early Eocene (Ypresian) geological formation located in the northeast central area of Washington (state), Washington state. The formation is composed of volcanic rocks in the upper unit and volcanic plus lacu ...

of Washington. One late Oligocene species ''

Pteroceltis tertiaria ''Pteroceltis'' is a genus of small trees in the family Cannabaceae and containing the living species '' Pteroceltis tatarinowii''. The genus is now restricted to an endemic range in China and Mongolia. The genus has a fossil record which includ ...

'' has been described from strata near Rott, Germany. The largest diversity of fossils are from Asia, with ''

Pteroceltis shanwangensis ''Pteroceltis'' is a genus of small trees in the family Cannabaceae and containing the living species '' Pteroceltis tatarinowii''. The genus is now restricted to an endemic range in China and Mongolia. The genus has a fossil record which includ ...

'' from the Miocene

Shanwang flora The Shanwang National Geology Park () is located in central Shandong province, People's Republic of China, about from Linqu County. It has an area of about . The Park is well known for the fossil bearing Shanwang Formation diatomitic deposits, on ...

in China, the

Abura flora Abura may refer to: * Abura, Iran, a village in Hamadan Province, Iran * Achieng Abura (died 2016), Kenyan musician * Mount Abura, Fukuoka, Japan * Abura, ancient name of Khabur (Euphrates) a river of west Asia * Abura-Dunkwa, the capital of Ab ...

of Japan preserved ''

Pterocarya ezoana ''Pterocarya'', often called wingnuts in English, are trees in the walnut family Juglandaceae. They are native to Asia. The botanic name is from Ancient Greek (''pteron'') "wing" + (''karyon'') " nut". Description ''Pterocarya'' are deciduous ...

'', and both ''

Pteroceltis taoae ''Pteroceltis'' is a genus of small trees in the family Cannabaceae and containing the living species '' Pteroceltis tatarinowii''. The genus is now restricted to an endemic range in China and Mongolia. The genus has a fossil record which includ ...

'' plus ''

Pteroceltis kungshimensis ''Pteroceltis'' is a genus of small trees in the family Cannabaceae and containing the living species ''Pteroceltis tatarinowii''. The genus is now restricted to an endemic range in China and Mongolia. The genus has a fossil record which include ...

'' known from the Miocene Hoengyeong Formation in North Korea.

References

{{Taxonbar, from1=Q3487254 Cannabaceae Plants described in 1873 Trees of China Endemic flora of China Rosales genera Taxa named by Karl Maximovich